The word "radiation" has a much longer history than Marie Curie's work. It originates from the Latin word "radiare", meaning "to shine" or "to beam". The concept of radiation was already being used in the 19th century to describe the process of emitting energy in the form of waves or particles.

Here's a breakdown of the key points:

* The word "radiation" existed before Curie's research: The term was already in use to describe the process of emitting energy, like heat or light.

* Curie's work focused on radioactivity: Her research wasn't about creating the word "radiation", but rather about discovering and studying a specific type of radiation - radioactivity.

* Radioactivity was a new discovery: Curie and her husband Pierre were pioneers in understanding the phenomenon of radioactivity, which describes the spontaneous emission of particles and energy from the nucleus of an atom.

Therefore, while Marie Curie was a groundbreaking scientist who significantly advanced our understanding of radiation, she didn't create the word itself.